Ruler attachment



May 1, 1923.

J. J. AHE ARN RULER ATTACHMENT Filed April 27, 1921 Patented May 1,1923.

UHTED JOHN J. AHEARN, OF PALMER, NEW YORK.

nULEn ATTAGi-LVLENT.

Application filed April 27, 1921. Serial No. 464,829.

able for school and oifice use combining the utilities of a ruler,pencil sharpener, eraser, envelope opener and the like; and with theseobjects in View the invention consists in a construction and combinationof parts .of which a preferred embodiment is shown in the drawing,wherein: A

Figure 1 is a general view of the implement. r Figure 2 is an edge viewof the same. Figure 3 is an end view. The body portion 10 of the deviceconstitutes a ruler having a graduated edge 11 extended at one end toform a tongue 12 of a width less than the body portion of the device,and attached to the body portion to project in a direction parallel withsaid terminal tongue and at a transverse interval therefrom is a blade13 arranged within the lines of the side edges of the said body portionand substantially within the thickness thereof so that the outer cuttingedge of the blade, while being exposed for use either in sharpeningpencils or at its extremities for making erasures, is protected fromsuch contact with adjacent objects as would be likely to injure eitherthe blade or such other object.

Preferably the blade is transversely tilted or inclined as will Jae seenclearly by reference to Figures 2 and 3, with the back .or inner edge ofthe blade depressed slightly below the plane of the correspondingsurface of the tongue 12 so that in using the blade as an envelopeopener, the under side of the tongue will bear upon the surface 0t theenvelope and will traverse the same as the cutting edge of the bladecuts thereuvelope, to act as a guide and minimize the tendency to tearthe envelope and thereby mutilate the contents thereof. Also the extremeend or point of the a blade projects slightly beyond the extremity ofthe tongue to facilitate the introduction of the same under the flap ofthe envelope or to puncture the same as may be preferred.

Having thus described the invention, what I claim is 3- v A. rulerattachment comprising a ruler body having a portion at one end cut awayto provide atongue, a blade having its side edges and one end sharpenedand its other end enlarged and offset and secured to the top face of thebody with the portion of the blade having the cutting edges disposedwithin the cutout portion of the body, said blade lying within the sidesof the body and transversely tilted to permit the tongue to engage anenvelope while being cut by said 7 blade.

In testimony whereof I anix my signature I in presence of two witnesses.

JOHN J AHEARNQ Witnesses Anion V. K. AHEARNy FRANK P. AHEARN.

